Zheng Cheng, Liu Zi-Yan, Liu Jin
Yunnan Institute of Tropical Crops, Xishuangbanna, China.
Mitochondrial DNA B Resour. 2020 May 27;5(3):2199-2200. doi: 10.1080/23802359.2020.1768964. eCollection 2020.
is a semi-domesticated species widely cultivated in tropical regions, such as the Americas and Southeast Asia. In Yunnan, Guangdong, and Fujian Provinces, China, is planted as an edible tropical fruit that was introduced from Southeast Asia. In this study, the chloroplast genome sequence of was assembled and characterized using Illumina sequencing. The whole chloroplast genome of is 158,841 bp long and consists of four regions: a large single-copy region (LSC, 88,256 bp), two inverted repeat regions (IRs, 25,958 bp), and a small single copy (SSC, 18,669 bp) region. The composition of the four bases in the circular chloroplast genome is 31.20% A, 32.00% T, 18.02% G, and 18.78% C, and the GC content of the entire chloroplast genome is 36.8%. A total of 129 genes were annotated in the chloroplast genome, of which 84 were protein-coding genes, 37 were transfer RNA (tRNA) genes, and eight were ribosomal RNA (rRNA) genes. The phylogenetic analysis indicated that was most closely related to This study provides a foundation for further investigation of chloroplast genome evolution and genetic variation within semi-domesticated species.
是一种半驯化物种，在热带地区广泛种植，如美洲和东南亚。在中国的云南、广东和福建省，作为从东南亚引进的可食用热带水果进行种植。在本研究中，利用Illumina测序技术对其叶绿体基因组序列进行了组装和特征分析。其叶绿体基因组全长158,841 bp，由四个区域组成：一个大单拷贝区域（LSC，88,256 bp）、两个反向重复区域（IRs，25,958 bp）和一个小单拷贝（SSC，18,669 bp）区域。环状叶绿体基因组中四种碱基的组成分别为A 31.20%、T 32.00%、G 18.02%和C 18.78%，整个叶绿体基因组的GC含量为36.8%。在叶绿体基因组中共注释了129个基因，其中84个为蛋白质编码基因，37个为转运RNA（tRNA）基因，8个为核糖体RNA（rRNA）基因。系统发育分析表明，与关系最为密切。本研究为进一步研究半驯化物种的叶绿体基因组进化和遗传变异奠定了基础。
